Multi-calorons and their moduli

Details Multi-calorons and their moduli Multi-calorons and their moduli

2005-11-11

arxiv.org/abs/hep-th/0511125v1

Physics

High Energy Physics

High Energy Physics - Theory

PhD thesis, 109 pages, 24 figures

Scientific paper

Pure Yang-Mills instantons are considered on S^1 x R^3 -- so-called calorons. The holonomy -- or Polyakov loop around the thermal S^1 at spatial infinity -- is assumed to be a non-centre element of the gauge group SU(n) as most appropriate for QCD applications in the confined phase. It is shown that a charge k caloron can be seen as a collection of nk massive magnetic monopoles each carrying fractional topological charge. This interpretation offers a physically appealing way of introducing monopole degrees of freedom into pure gluodynamics: as constituents of finite temperature instantons. New and exact solutions are found along with the fermionic zero-modes of the Dirac operator. The properties of the zero-modes are analysed as well as the hyperkahler and twistor geometry of the caloron moduli space. Lattice gauge theoretic applications are also mentioned.

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